How fast can you RUN 5k?

Seems like cycling has given me good lungs for running. I've run maybe 40 miles in the last 12 months (2 half marathons, and 4-5 training runs...I wasn't training since I ran the halfs with my wife at her pace), but the 5k training run was 19:30 or so. I'd like to start running again this year, but the cycling has proved to be too hard to cut back on.

when I ran a lot in my mid 20s I had a PR that was just shy of breaking 8 minute miles, so my 5ks were somewhere around 25 minutes or whatever... That was my goal - a sub-8:00 5K...but I got fat and old before I got around to it.

My personal best was about 23 minutes but that was a few years ago. Haven't tried running since I put all the weight back on after getting sick of the gym being useless, and despite losing all of it and then some by cycling I never felt the urge to run.

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I can "jog" that in 31 minutes. I havent tried racing it tho. Personally, I despise jogging/running with a passion, it's just one of the most mind-numbingly boring activities and the only thing I can think of during the run is how much my body hurts and how much I hate it.